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Relay valve is a part of automobile air brake system. In the braking system of truck, relay valve can shorten the reaction time and pressure establishment time.
The relay valve is generally installed in the pipeline from the brake valve to the middle and rear axle. Because the middle and rear axle is far away from the brake valve and the pipeline is long, the resistance of high-pressure air entering the brake air chamber during braking is large, which is prone to braking lag, and slow phenomenon will also occur when braking is released. The relay valve is installed. During braking, through the control of the brake valve, the high-pressure air in the braking air chamber enters directly from the air reservoir through the relay valve, which speeds up the air inlet speed and improves the braking efficiency. When the brake is released, the high-pressure air in the brake air chamber is directly discharged nearby through the relay valve to quickly release the brake.
The air inlet of the relay valve is connected to the air reservoir, and the air outlet is connected to the brake air chamber. When the brake pedal is pressed, the output air pressure of the brake valve is input as the control pressure of the relay valve. Under the action of the control pressure, the air inlet valve is pushed open, so the compressed air directly enters the brake air chamber through the air inlet from the air reservoir without flowing through the brake valve, which greatly shortens the inflation pipeline of the brake air chamber and accelerates the inflation process of the air chamber. Therefore, relay valve is also called acceleration valve. Relay valve is used at the end of long pipeline to quickly fill the brake chamber with compressed air from the air reservoir, such as in the braking system of trailer or semi-trailer. Differential relay valve is generally used. Prevent the simultaneous operation of the driving and parking systems and the overlapping of the forces in the combined spring brake cylinder and the spring brake chamber, so as to avoid the overload of the mechanical transmission elements and make the spring brake cylinder charge and exhaust quickly.
Our Advantages
The company specializes in the production and sales of 14 series of FAW (size J6), FAW, JAC / Valin, Shaanxi Automobile, heavy truck, new Dawei, Hanwei, Aolong, liute, and more than 300 types of relay valves, brake valves, clutch slave cylinders and clutch master cylinders such as excavators and loaders, with a warranty of half a year. Provide size, upper and lower nozzle position, support customization!
Packing & Delivery
details1. Our packing uses export wooden cases, plastic boxes, cartons or pallets. All the package are very strong, the wooden box is firmly bound, the package is covered with a waterproof film to prevent water or damage during transportation.Before packing, we can also stick corresponding labels and shipping marks according to your needs. All our goods are well packed. 2. According to the quantity, we can use express delivery, air transportation or ocean transportation, automobile transportation, railway transportation, etc. we have our own freight forwarders, and we can also use the designated freight forwarders of customers, which can meet various delivery requirements of customers, such as EXW, FOB, CIF, etc.It can also be exported from many ports in China. Such as Qingdao port, Ningbo port, Lianyungang port, Tianjin port, Suifenhe River and Alashankou in China. 3. We can also send the goods by express if the customers have less goods. According to customer's request, we can use express .such as DHL, TNT, EMS, FedEx, etc. the delivery time is 3-7. Safe, fast and convenient. It's also a good choice for you
Jinan carman International Trade Co., Ltd. was established in 2003. It has been engaged in the export of auto parts and construction machinery parts for 8 years. Our main business is to export truck parts and construction machinery parts to Russia,Europe and Southeast Asia, such as SINOTRUK, Shaanqi, Jiefang, XCMG, Shantui, JAC, Cummins, JCB, caterpillar, Isuzu,Yanmar, lgmg, DCEC The company has its own warehouse in Jinan, covering an area of 2000 square meters, and has a lot of inventory,and has the ability to quickly collect and deliver accessories. We always adhere to the quality of products as the core, to serve customers for the purpose. Hope to be able to better communicate with friends from all over the world.
1. who are we? We are based in Shandong, China, start from 2013,sell to Eastern Asia(75.00%),Northern Europe(11.00%),Africa(4.00%),Southern Europe(3.00%),South Asia(2.00%),Southeast Asia(2.00%),Western Europe(2.00%),North America(1.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment;
3.what can you buy from us? Auto parts,Truck parts,Engine parts,Parts for Cummins,Parts for XCMG
4. why should you buy from us not from other suppliers? Jinan Carman International Trade Co., Ltd. is located in Jinan city, the capital of Shandong Province. Main products are heavy truck accessories, light truck parts, engineering machinery parts and so on. We have perfect service system.
JINAN CARMAN INTERNATIONAL TRADE CO. Ltd
Our company was founded in Jinan City. Since the 1960s, the city has been actively establishing and developing truck and various engineering machinery manufacturing factories, leading to the emergence of such a large enterprise that produces litt... JINAN CARMAN INTERNATIONAL TRADE CO. Ltd
Our company was founded in Jinan City. Since the 1960s, the city has been actively establishing and developing truck and various engineering machinery manufacturing factories, leading to the emergence of such a large enterprise that produces litt...
